Pyrite - Octahedral with Snow-on-the-Roof Sphalerite - Huanzala Mine

This striking large cabinet–size pyrite specimen represents a classic Huanzala Mine style, from one of Peru’s most celebrated historic localities. The specimen is composed of a dense assemblage of razor-sharp octahedral pyrite crystals, exhibiting exceptionally clean, highly reflective metallic faces with a bright silver-gold sheen that rivals polished metal. The pyrite crystals are textbook in form, with crisp edges, precise geometry, and mirror-like luster across the crystal faces—hallmarks of the finest Huanzala material. The overall structure presents as a cohesive block of interlocking octahedrons, creating a powerful, architectural presence that is instantly recognizable to seasoned collectors of Peruvian sulfides. Adding visual contrast and classic character is the presence of white sphalerite and crandallite aggregates, delicately perched along edges and crystal junctions in the well-known “snow on the roof” habit. These pale coatings accentuate the sharp geometry of the pyrite without obscuring it, enhancing depth and texture while preserving the dominance of the metallic crystals beneath. Huanzala pyrite is renowned for exactly this combination: brilliant luster, uncompromising crystal form, and minimal matrix distractions, and this specimen exemplifies those traits at a high level. The condition is excellent, with no obvious damage to the crystal faces, making it a superb display piece from multiple angles. This is a classic Peruvian pyrite in the purest sense—bold, geometric, and visually commanding—ideal for an advanced sulfide collection, a Peruvian locality suite, or as a statement specimen highlighting the elegance of octahedral crystal form.